Exclusive Double Charmonium Production from ${\rm Y}$ Decay

Abstract

The exclusive decay of ${\rm Y}$ to a vector plus pseudoscalar charmonium is studied in perturbative QCD. The corresponding branching ratios are predicted to be of order $10^{-6}$ for first three ${\rm Y}$ resonances, and we expect these decay modes should be discovered in the prospective high-luminosity $e^{+}{e}^{-}$ facilities such as super $B$ experiment. As a manifestation of the short-distance loop contribution, the relative phases among strong, electromagnetic and radiative decay amplitudes can be deduced. It is particularly interesting to find that the relative phase between strong and electromagnetic amplitudes is nearly orthogonal. The resonance-continuum interference effect for double charmonium production near various ${\rm Y}$ resonances in $e^{+}{e}^{-}$ annihilation is addressed.

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Cited by in corpus (19)

• QCD corrections to J/psi plus eta_c production in e+e- annihilation at sqrt{s}=10.6 GeV
• QCD radiative correction to color-octet $J/\psi$ inclusive production at B Factories
• QCD corrections to double J/ψproduction in e+e- annihilation at \sqrt{s}=10.6 GeV
• Refactorizing NRQCD short-distance coefficients in exclusive quarkonium production
• Exclusive $et{a}_b$ decay to double $J/\psi$ at next-to-leading order in $alph{a}_s$
• Bridging light-cone and NRQCD approaches: asymptotic behavior of $B_c$ electromagnetic form factor
• Double charmonium production in exclusive bottomonia decays
• Possible contributions to $e^{+}{e}^{-}\to J/\psi +{\eta }_c$ due to intermediate meson rescatterings
• Exclusive decay of ${\rm Y}$ into $J/\psi +{\chi }_{c0,1,2}$
• Exclusive decay of P-wave Bottomonium into double J/ψ
• The Exclusive Decay of Upsilon into $h_c$, the $X(3940)$ and $X(4160)$
• ${\rm Y}$ decay to two-charm quark jets as a Probe of the Color Octet Mechanism
• Evidence of ${\rm Y}(1S)\to J/\psi +{\chi }_{c1}$ and search for double-charmonium production in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• Relativistic corrections to the semi-inclusive decay of $\mathbf{\psi }$ and $\mathbf{{\rm Y}}$
• Relativistic corrections to ${\rm Y}$ exclusive decay into double $S-$wave charmonia
• Experimental review of the ${\rm Y}(1S,2S,3S)$ physics at $e^{+}{e}^{-}$ colliders and the LHC
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• EtabFDC: an ${\eta }_b$ event generator in hadroproduction at LHC